2) As the population continues to grow, so does the need better ways to grow food. Which of these is an example of how humans have used
technology to help wth the production of food?
A) moving to a system of smaller, less-specific farms
B)
grow the same crop in the same area year after year
genetically modified soybeans have been created to
be pest-resistant
D)
hiring more people to harvest crops instead of buying
more machinery

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

What is the key to the recognition of codominance?